Free 24-page substitution-cipher pack

24 free printable cryptograms with answers

Decode 24 newly written messages across three levels. Every puzzle has its own one-to-one alphabet, accurate starter mappings, writable decoding space, and a matched complete key.

Worksheets are on pages 1-12. Plaintexts and complete keys are on pages 13-24. No sign-up and no watermark.

Preview and choose a puzzle or answer page

Choose a page from the actual PDF contents. The links open the complete 24-page file at your selection when supported by your PDF viewer; they are not separate single-page files.

In the print dialog, enter page 1 to print only that page. Some pages contain more than one puzzle or answer.

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Actual printable US Letter page 1: Printable Cryptograms - Page 1 of 12

High-contrast preview: actual US Letter page 1, Printable Cryptograms - Page 1 of 12. Open the PDF for full-size printing. The interactive viewer can display every original page.

Use the PDF links to view or print the selected page.

Open this page in the full-size PDF

Actual US Letter PDF page 1. Select a page above to see its real contents. A4 uses its own print layout.

Choose a cryptogram level

Guided

Four starter mappings

Eight shorter messages for learning consistent substitution.

Classic

Two starter mappings

Eight longer sentences with less supplied help.

Challenge

One starter mapping

Eight longest messages with the smallest opening clue.

What is inside the printable cryptogram pack?

Two puzzles appear on each worksheet page. Every item has an independent alphabet and a matched answer in the second half.

Guided

Cryptogram 1

33 letters · 16 distinct · 4 starter mappings

Answer page 13
Guided

Cryptogram 2

42 letters · 18 distinct · 4 starter mappings

Answer page 13
Guided

Cryptogram 3

43 letters · 17 distinct · 4 starter mappings

Answer page 14
Guided

Cryptogram 4

40 letters · 14 distinct · 4 starter mappings

Answer page 14
Guided

Cryptogram 5

42 letters · 18 distinct · 4 starter mappings

Answer page 15
Guided

Cryptogram 6

40 letters · 18 distinct · 4 starter mappings

Answer page 15
Guided

Cryptogram 7

42 letters · 16 distinct · 4 starter mappings

Answer page 16
Guided

Cryptogram 8

44 letters · 20 distinct · 4 starter mappings

Answer page 16
Classic

Cryptogram 9

56 letters · 19 distinct · 2 starter mappings

Answer page 17
Classic

Cryptogram 10

53 letters · 20 distinct · 2 starter mappings

Answer page 17
Classic

Cryptogram 11

54 letters · 17 distinct · 2 starter mappings

Answer page 18
Classic

Cryptogram 12

52 letters · 17 distinct · 2 starter mappings

Answer page 18
Classic

Cryptogram 13

54 letters · 18 distinct · 2 starter mappings

Answer page 19
Classic

Cryptogram 14

59 letters · 18 distinct · 2 starter mappings

Answer page 19
Classic

Cryptogram 15

58 letters · 17 distinct · 2 starter mappings

Answer page 20
Classic

Cryptogram 16

59 letters · 17 distinct · 2 starter mappings

Answer page 20
Challenge

Cryptogram 17

79 letters · 20 distinct · 1 starter mapping

Answer page 21
Challenge

Cryptogram 18

83 letters · 22 distinct · 1 starter mapping

Answer page 21
Challenge

Cryptogram 19

73 letters · 18 distinct · 1 starter mapping

Answer page 22
Challenge

Cryptogram 20

82 letters · 19 distinct · 1 starter mapping

Answer page 22
Challenge

Cryptogram 21

81 letters · 20 distinct · 1 starter mapping

Answer page 23
Challenge

Cryptogram 22

83 letters · 19 distinct · 1 starter mapping

Answer page 23
Challenge

Cryptogram 23

86 letters · 15 distinct · 1 starter mapping

Answer page 24
Challenge

Cryptogram 24

78 letters · 21 distinct · 1 starter mapping

Answer page 24

Preview one real cipher from each level

These are actual messages from the download. Open an answer only when you are ready to see the plaintext.

Guided

Cryptogram 1

J KCDWY XYJMY ZJNWX MVVZ IVM J ASWJM HSJU.

Starter mappings: J=A · M=R · W=E · V=O
Show answer

A QUIET START MAKES ROOM FOR A CLEAR PLAN.

Classic

Cryptogram 9

RBN YXFQVY BNZQ D WDZN SNLZNGRXVF VL RBN GZVAQI DPVUN RBN GVASRCDSQ.

Starter mappings: N=E · V=O
Show answer

THE WINDOW HELD A PALE REFLECTION OF THE CLOUDS ABOVE THE COURTYARD.

Challenge

Cryptogram 17

IBWS KBW QAIWD DWKZDSWC, KBW AXC NXANE DWUZLWC PKU UKWHCJ KPNE HU PV KBW QHZUW BHC SWYWD BHQQWSWC.

Starter mappings: W=E
Show answer

WHEN THE POWER RETURNED, THE OLD CLOCK RESUMED ITS STEADY TICK AS IF THE PAUSE HAD NEVER HAPPENED.

How a substitution cryptogram works

One plaintext letter always becomes the same cipher letter inside a puzzle. Spaces and punctuation stay in place. Each page starts with accurate mappings; record confirmed letters on the alphabet strip and test a guess everywhere that symbol appears.

Every puzzle uses a different alphabet, and no letter encrypts as itself.

How every cipher is checked

Bijective derangement

All 26 letters map one-to-one, with zero plaintext letters left unchanged.

Exact round trip

The inverse key reconstructs the original message with spaces and punctuation intact.

Accurate unique assets

Every hint is checked, and plaintexts, ciphertexts, mappings, and signatures must be unique.

Printing the PDFs

Use Letter for 8.5x11-inch paper or A4 for 210x297-mm paper. Print at 100% or Actual Size. Print pages 1-12 for worksheets; answers begin on page 13.

All cipher text, writing lines, and keys remain readable in grayscale.

Use permission

You may print copies for personal use, one classroom, a homeschool group, a library activity, or a community event. Please do not resell or redistribute the PDF files.

Frequently asked questions

Do these printable cryptograms include answers?

Yes. Pages 1-12 are worksheets and pages 13-24 contain matched plaintexts and complete keys.

Are the messages famous quotations?

No. All 24 messages were written specifically for this pack.

Does one cipher key work for the whole pack?

No. Every cryptogram uses an independent substitution alphabet.

Can a letter stand for itself?

No. Every generated alphabet is a derangement with zero self-mapped letters.

Are the Letter and A4 files different?

Yes. Each file uses the true paper dimensions named on its button.

Work with the repeated letters in cryptogram 1

Keep the answer closed and use the printed starter mappings. A language guess must agree with every occurrence of its cipher letter; it is not a mathematically forced substitution.

Hint 1: carry the starter mappings across

The starter key gives M = R and V = O. The four-letter cipher word MVVZ therefore reads ROO_. Its middle pair must decode to the same letter twice.

Hint 2: test a word in the sentence

ROOM is a plausible completion, suggesting Z = M. Write that as a tentative guess and use it at every Z in the message. Continue checking the surrounding words; do not change a key for only one occurrence.

Hint 3: check the complete message

After solving, compare the entire sentence with the matched answer page and full key. The intended phrase is “MAKES ROOM FOR A CLEAR PLAN.” A correct-looking isolated word is not enough if the rest of the substitution conflicts.